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Ch 2 Psy Review
Ch 2 Review Random Notes
| Question | Answer |
|---|---|
| Dendrites | Receives Messages |
| Axons | Carry messages out to other cells |
| Glial Cells | Grey/fatty, provide support for neurons to grow on; deliver nutrients to neurons; produce myelin to coat axons; clean up waste products and dead neurons |
| Myelin | Fatty substances produced by glial cells; insulates, protects, and speeds up neural impulses |
| Resting Potential | Not firing a neural impulse |
| Action Potential | Firing electrical charge in neuron |
| Axon Terminals | "limbs"/ends of neurons |
| Synaptic Knob | Ends of axon terminals, contains synaptic vesicles |
| Neurotransmitters | Chemicals of molecules inside synaptic vesicles... from one cell causes next cell to fire |
| Agonists | Mimic or enhance effects of neurotransmitters on receptor sites of next cell, increasing or decreasing activity of cell |
| Antagonists | Block or reduce cells response to the action of other chemicals or neurotransmitters |
| Reuptake | Neurotransmitters are taken back (sucked) back into synaptic vesicles |
| Sensory Neurons | Carries info from senses to central nervous system (afferent) |
| Interneurons | Connect sensory neurons to motor neurons |
| Motor Neurons | Carry messages from spinal cord to the muscles and glands |
| Reflex Arc | Sensory neurons to interneurons to motor neurons resulting in reflex action |
| Parasympathetic System | Eat, Drink, Rest |
| Sympathetic | Fight or Flight |